package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.heima.feign.article.IArticleClient;
import com.heima.common.exception.CustomException;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.GreenScanService;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.*;
import java.util.stream.Collectors;


@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {

    @Autowired
    private WmNewsMapper wmNewsMapper;

    @Autowired
    private IArticleClient articleClient;

    @Autowired
    private GreenScanService greenScanService;


    @Autowired
    private WmChannelMapper wmChannelMapper;

    @Autowired
    private WmUserMapper wmUserMapper;

    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 自媒体文章审核
     *
     * @param id 自媒体文章id
     */
    @Override
    public void autoScanWmNews(Integer id) {
        //1.根据文章Id查询数据库文章信息
        WmNews wmNews = wmNewsMapper.selectById(id);
        if (wmNews == null) {
            throw new CustomException(AppHttpCodeEnum.DATA_NOT_EXIST);
        }

        if (wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())) {
            //从内容中提取纯文本内容和图片
            Map<String, Object> textAndImages = handleTextAndImages(wmNews);

            //2.审核文本内容
            //2.1先进行自管理敏感词审核
            boolean isSensitive = handleSensitiveScan((String) textAndImages.get("content"), wmNews);
            if (!isSensitive) return;

            //2.2自管理敏感词审核通过,再调用百度云审核
            boolean isTextScan = handleTextScan((String) textAndImages.get("content"), wmNews);
            if (!isTextScan) return;

            //3.审核图片
            boolean isImageScan = handleImageScan((List<String>) textAndImages.get("images"), wmNews);
            if (!isImageScan) return;

            //4.审核成功，远程调用article微服务,保存app端的相关的文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);
            if (!responseResult.getCode().equals(200)) {
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关文章数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews, (short) 9, "审核成功");

        }
    }


    /**
     * 远程调用article微服务,保存app端相关的文章数据
     *
     * @param wmNews
     */
    public ResponseResult saveAppArticle(WmNews wmNews) {

        ArticleDto dto = new ArticleDto();
        //属性的拷贝
        BeanUtils.copyProperties(wmNews, dto);
        //文章的布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if (wmChannel != null) {
            dto.setChannelName(wmChannel.getName());
        }

        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if (wmUser != null) {
            dto.setAuthorName(wmUser.getName());
        }

        //设置文章id
        if (wmNews.getArticleId() != null) {
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());

        ResponseResult responseResult = articleClient.saveArticle(dto);
        return responseResult;

    }

    /**
     * 审核图片
     *
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> images, WmNews wmNews) {
        //假设能审核通过
        boolean flag = true;

        try {
            for (String url : images) {
                Map map = greenScanService.scanImage(url);
                if (map != null) {
                    //审核失败
                    if ((int) map.get("conclusionType") == 2) {
                        flag = false;
                        updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                        break;
                    }

                    //不确定信息  需要人工审核
                    if ((int) map.get("conclusionType") == 3) {
                        flag = false;
                        updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                        break;
                    }
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 审核纯文本内容
     *
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {

        boolean flag = true;

        if ((wmNews.getTitle() + "-" + content).length() == 0) {
            return flag;
        }

        try {
            Map map = greenScanService.scanText((wmNews.getTitle() + "-" + content));
            if (map != null) {
                //审核失败
                if ((int) map.get("conclusionType") == 2) {
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }

                //不确定信息  需要人工审核
                if ((int) map.get("conclusionType") == 3) {
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }

        return flag;

    }

    /**
     * 修改文章内容
     *
     * @param wmNews
     * @param status
     * @param reason
     */
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    /**
     * 自管理的敏感词审核
     *
     * @param content
     * @param wmNews
     * @return
     */
    public boolean handleSensitiveScan(String content, WmNews wmNews) {

        boolean flag = true;

        //获取所有的敏感词  --先从Redis中获取
        List<String> sensitiveList = (List<String>) redisTemplate.opsForValue().get("Sensitive");
        if (sensitiveList == null) {
            List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.<WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));
            sensitiveList = wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());
            //存入Redis中
            redisTemplate.opsForValue().set("Sensitive", sensitiveList);
        }
        //初始化敏感词库
        SensitiveWordUtil.initMap(sensitiveList);

        //查看文章中是否包含敏感词
        Map<String, Integer> map = SensitiveWordUtil.matchWords(content);
        if (map.size() > 0 && wmNews != null) {
            updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容" + map);
        } else if (map.size() > 0 && wmNews == null) {
            flag = false;
        }

        return flag;
    }

    /**
     * 1。从自媒体文章的内容中提取文本和图片
     * 2.提取文章的封面图片
     *
     * @param wmNews
     * @return
     */
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {

        //存储纯文本内容
        StringBuilder stringBuilder = new StringBuilder(wmNews.getTitle());
        stringBuilder.append(wmNews.getLabels());

        List<String> images = new ArrayList<>();

        //1。从自媒体文章的内容中提取文本和图片
        if (StringUtils.isNotBlank(wmNews.getContent())) {
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);
            for (Map map : maps) {
                if (map.get("type").equals("text")) {
                    stringBuilder.append(map.get("value"));
                }

                if (map.get("type").equals("image")) {
                    images.add((String) map.get("value"));
                }
            }
        }
        //2.提取文章的封面图片
        if (StringUtils.isNotBlank(wmNews.getImages())) {
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }

        //3.封装结果map返回
        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("content", stringBuilder.toString());
        resultMap.put("images", images);
        return resultMap;

    }
}